Gas stove fuel supply system, including a valve



May 22, 1956 1.. 'v. SEAMAN GAS STOVE FUEL SUPPLY SYSTEM, INCLUDING A VALVE Filed NOV. 21.,

INVENTOR. LEO v. SEAMAN )fifl GAS srova FUEL SUPPLY SYSTEM, INCLUDING a A VALVE v Leo V.Seaman,P hoenix, p i Application November 21, 1952, SerialNo. 321,808 2 Claims. 7 (Cl. 158-120) a p This invention concernsimproved gas stove valves that may be used with automatic controls.

' Gas stoves, as now generall buil have a rowof valves with their inlets attached to a manifold which'extends {transversely across a front portion of the stove body.

r be valve stems extend out through a front panel and the control knobs are mounted on the outer endsof these stems. The inner portion 'ofthese valves terminates in a nozzle which enters the forepa rt of the mixing tube of each burner, and the mixing tubes are mounted in the stove frame so that they remain in fixed relation to the nozzle of each of the valves.

The trend toward automatic control of the several burn ers of a gas stove is highly desirable. T do this with the ordinary type of manual valve is very costly. The ordinary valve if not amenable to the insertion of a by-pass which is necessary to include automatically operated valves between the manual valve itself, and the orifice nozzle. Inorder to change over a stove having ordinary or standard equipment, it is necessary to relocate or ofi-set j the manual valve stem in order that a new orifice nozzle will fit into the fixed position of the burner mixing tube. The off-set requires that the front panel of the stove be redrilled or a new panel provided. This is always a costly operation and spoilsthe appearance of the stove.

In view of the foregoing, one of the objects of my invention is to provide an improved gas fuel supply sys- 2,746,533 Patented =May 22, v1956 iFigureG is:a side view of 'saidadjusting plug.

. Similar numerals refer to .similar parts 'in the several views. j V

The valve body 2 is drilled and reamed axially within its front portion3 to form a.;seat 4 for astandard plug type valve 5. There I are twolaterally extending bosses 6 and 7 on each sideof thelvalve which are threadedto receive bushing nuts 16 and 17. At the rear of the valve there is a :nozzle boss 8 which is to be inserted into the mixing chamber 10 of burner mixing tube 12. A shoul- 'der 1l4isprovided to determine the correct depth of insertion of this nozzle into said chamber.

The rear portion 18 of the body is drilled axially and threaded to receive the adjusting plug20. On the lower .side of valve body 2 there is a downwardly extending threaded inlet boss 22, which is adapted to beattached to the stove manifold 23. Each of'the laterally extending bosses 6 and 7 is bored axially. The inlet boss 6 has bore 26, and outlet 'boss 7 has bore 27. The outlet boss bore 27 is connected by a small drill hole 29 to a chamber-30 at :theibottoni .ofthe bore of the valve seat 4. A small drill hole 32 connects inlet bore 26 with the axial threaded bore 21 of the nozzle 8.

Within the nozzle bOSs 8 there is a directive plug 35, having centering fins 36 and a conical point 37. Within this bore there is also a threaded adjusting plug' 20 which has a center orifice bore 42. The inner end of this bore cooperates with the conical point 37 to regulate the gas flow through the orifice. The interior of plug 20 is drilled tern including the stove valve connected by a loop to any of the automatic control valves now in common use, such as those controlled by temperature.

Another object is to provide a fuel system including a valve, as above stated, which has a nozzle orifice which can be selected to accommodate all different qualities of gas and at diiferent delivery pressures without altering the remaining parts of the valve; still another object is to provide such a system with a burner mixing tube nozzle which will fit all standardlmixing tubes and may be selected as to its orifice end so that the orifice properly accommodates gases of different qualities and which are furnished at vtioned in Figure Z, showing the orifice adjusting mechanism;

Figure 4 is an elevational section of the orifice nozzle taken substantially on line 4-4, Figure 3, and drawn on an enlarged scale; i

Figure 5 is an end view of the orifice nozzle with the adjusting plug removed, and

out to receive the directive plug 35. The end of plug 20 is formed into hexagon shape to receive a wrench so that the plug may be threaded in or out of nozzle Sin order j to adjust the position of point 37 within orifice 42.

General installation of the valve is shown in Figure 1. Here each of the laterally extending bosses is connected to a pipe which is formed as a loop and includes the automatic regulating valve 52. Gas enters the valve from the stove manifold 23, flows through boss 22 and into and through hole 54 in valve plug 5. This plug is drilled axially as indicated in Figure 2 by dotted lines, marked 55. Gas enters space'30 and then flows through the drill hole 29 into outlet bore 27 of boss 7. From here it enters the lower end 56 of pipe 50 and thereafter flows through valve 52 in the direction indicated by the arrow and thence enters the inlet bore 26 of boss 6. From bore 26,

the gas.enters the drill hole 32 and flows into thebore 21 of nozzle 8 from which it finally exits through orifice 42 into mixing chamber 10 of burner tube 12.

From the foregoing itwill be noticed that the manual valve plug 5 operates in the normal manner, but that before the gas leaves orifice 42 it has travelled through automatic valve 52 and is'suoject to on and off control thereby. In this way the valve is adapted to automatic control whether it is installed on the stove top or as one of the oven burner valves.

Iclaim:

1. A gas stove fuel supply system including a valve composed of a body having a cylindrical forepart and a coaxial cylindrical rear part, an axially extending conical valve seat bore extending rearward from the fore end of said forepart and having a chamber at its inner end, an axial burner mixer nozzle boss extending rearward from the rear part of the body and having an axially extending nozzle receiving bore therein, a laterally disposed radially extendingtube connecting boss having a bore connecting to said chamber at the bottom of said valve seat bore, an oppositelaterally disposed radially extending tube connecting boss having a bore opening into said nozzle bore, and an inlet attaching boss extending radially from the fore portion of said valve body having a central bore extending radially into the forepart of said valve seat bore; a conical valve plugfitting' into saidvalve" and disposed to re'gisterwith thenbore of said inlet-boss,

and a tube loopincluding an automatic gas fiow regulating valve connecting said laterally disposed connecting tbossesfh- ,1 212, A gas stovelfuel supply system including a valve composed of abody having a cylindrical forepart and a coaxial cylindrical rear part, an axially extending conical .valve-iseatbore extending rearward from the fore end of said forepart and having a chamber-at its inner end,

an axial burner mixer nozzle boss extending rearward from the rear part of the body and having an axially' extending nozzle receiving bore therein, a laterally disposed radially extending tube connecting boss having a bore connecting to said chamber at the bottom of said valve seatbore, an oppositely positioned, radially extending tube connecting boss having a vbore opening into said nozzle bore; and an inlet attaching boss extending radially from the fore portion of said valve body adapted for threaded attachment to a gas stove manifold and having a central .bore extending radially into the fore part of said valve seat bore a conical valve plugfitting into said valve seat bore having an axially extending operating stem at 1 .itstouterendrand an. axial bore-extending from its inner end to its forward portion and a radial bore extending outward from said axial bore to the conical surface of the plug and disposed to register with the bore of said inlet boss when said valve plug is rotated so that the axes of said bores are substantially aligned; a tube loop connecting said laterally disposed connecting bosses, a mixer nozzle fitted in said burner mixer nozzle bore, and a gas regulating valve included in said tube loop, whereby gas entering said inlet boss passes through said valve plug, and said laterally disposed boss and said tube, including saidregulating valve, and said opposite laterally disposed boss and to said nozzle.

References Cited in the file of this patent UNITED STATES PATENTS 1,133,165 Wirth May 4,1915 1,469,394 Powers Oct. 2, 1923 1,814,163. Irwin July 14, 1931 2,499,022 Frank Feb. 28, 1950 2,543,189 Mueller Feb. 27, 1951 Harper Mar. 25, 1952 

